Bug 495835

Summary:	Spectacle control window blocks rectangular area screenshot
Product:	[Applications] Spectacle	Reporter:	Mark Stanton <mark>
Component:	General	Assignee:	Noah Davis <noahadvs>
Status:	RESOLVED UPSTREAM
Severity:	major	CC:	emelenas, kde, nate, p, shimi.chen
Priority:	NOR	Keywords:	regression
Version First Reported In:	24.08.2
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Mark Stanton 2024-11-05 12:42:42 UTC

SUMMARY
On selecting "Rectangular region" for a screenshot the Spectacle window relocates to the centre of the screen.
If this is not entirely covered by an active window, the Spectacle window comes to the top, potentially blocking areas of interest.  It cannot be moved before taking the shot.

STEPS TO REPRODUCE
1. Open Spectacle
2. Move the window to the side
3. Press "Rectangular region".

OBSERVED RESULT
1) If application windows only partially cover the Spectacle window it will be visible, blocking other windows.
2) If not, taking the shot and relocating the Spectacle window will find it re-centred on the screen.

EXPECTED RESULT
The Spectacle window should not be visible.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 41
KDE Plasma Version: 6.2.2
KDE Frameworks Version: 6.7.0
Qt Version: 6.8

ADDITIONAL INFORMATION
Kernel Version: 6.11.5-300.fc41.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 3800X 8-Core Processor
Memory: 31.2 GiB of RAM
Graphics Processor: llvmpipe
Manufacturer: ASUS
nVidia proprietary drivers in use, not Nouveau

Comment 1 Mark Stanton 2024-11-05 12:45:27 UTC

Also, the "Launch Bug Report" button on the submit bug report dialogue does not open the required page on this website.
This is not a system issue this function does work for me in other applications, eg Android Studio.

Comment 2 Nate Graham 2024-11-05 19:13:56 UTC

Can reproduce. It no longer minimizes the way it used to.

Comment 3 Nate Graham 2024-11-05 19:14:40 UTC

*** Bug 495624 has been marked as a duplicate of this bug. ***

Comment 4 Noah Davis 2024-11-09 14:45:21 UTC

When you try to take a screenshot with a delay, the window is hidden and then shown minimized. This is done to avoid a minimize animation, but still give a clickable entry in the task manager.

It seems like what happens now is that rather than hiding the window and showing it minimized in the task manager, the window just hides and reopens according to the window placement rules. I am not sure what causes the bug, but I don't think it's in Spectacle's code. If I had to guess, I would say it's in QtWayland (unless this bug exists on X11 too; I'll need to test) or KWin since those two change fairly frequently and have a lot of authority over how windows are managed.

Comment 5 Nate Graham 2024-11-12 15:35:23 UTC

Probably an upstream change/regression, yeah.

But why do we need to minimize the window addition to hiding it? Why is hiding not enough on its own?

Comment 6 Noah Davis 2024-11-12 16:10:03 UTC

(In reply to Nate Graham from comment #5)
> Probably an upstream change/regression, yeah.
> 
> But why do we need to minimize the window addition to hiding it? Why is
> hiding not enough on its own?

Because then you don't get the progress indicator in the task manager and you don't have a way to cancel the screenshot.

Comment 7 Nate Graham 2024-11-12 16:22:43 UTC

If it came down to it, losing those would be preferable to experiencing this bug.

Comment 8 Noah Davis 2024-12-10 07:51:09 UTC

This appears to be fixed now. I'm not sure whether it's a change to KWin or upgrading to Qt 6.8.1 that fixed it. I wouldn't be surprised if it was the latter though since that also fixed other Wayland regressions from Qt 6.8.0.